The Bolt,shoulder, cataloged under National Stock Number 5306-01-031-3207, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Tens Machine Company, Inc. Dba Tens Machine Co Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-031-3207 |
| Primary Part Number | A51P60722-13 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Tens Machine Company, Inc. Dba Tens Machine Co Inc |
| Status | ACTIVE |
| Head Height | 0.219 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN |
| Fastener Length | 1.443 INCHES MINIMUM AND 1.473 INCHES MAXIMUM IN |
| Shoulder Length | 0.998 INCHES MINIMUM AND 1.008 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.436 INCHES MINIMUM AND 0.437 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.435 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Shank Unthreaded Hole Diameter | 0.109 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | G-3111,FSCM 26512 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.688 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.316 INCHES MINIMUM AND 1.326 INCHES MAXIMUM FIRST HOLE IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A51P60722-13 | Tens Machine Company, Inc. Dba Tens Machine Co Inc (USA) |
| Reference | Meaning |
|---|---|
| A51P60722-13 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| A51P60722-13 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51P60722-13 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5306-01-031-3207 is a Bolt,shoulder, manufactured by Tens Machine Company, Inc. Dba Tens Machine Co Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-031-3207 has 1 manufacturer part number on file: A51P60722-13 (Tens Machine Company, Inc. Dba Tens Machine Co Inc).
Key specifications for A51P60722-13: Head Height: 0.219 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN; Fastener Length: 1.443 INCHES MINIMUM AND 1.473 INCHES MAXIMUM IN; Shoulder Length: 0.998 INCHES MINIMUM AND 1.008 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.436 INCHES MINIMUM AND 0.437 INCHES MAXIMUM FIRST SHOULDER IN. 17 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.